Abstract:
:Anisotropic motions of DNA fragments in the size range 6-118 base pairs are studied by the steady-state fluorescence polarization of different excitation transitions in the intercalated ethidium cation. Calculated effective tumbling and twisting times are found to be shorter than predicted for overall motions of rigid DNA, indicating that internal motions and/or dye wobbling contribute to the depolarization. The data are consistent with a model where the DNA fragments are considered to be rigid against bending but torsionally flexible, and where the dye can wobble within the intercalated site. We also discuss the possibility of correlated out-of-plane motions of the dye and the DNA bases.
journal_name
Nucleic Acids Resjournal_title
Nucleic acids researchauthors
Härd T,Kearns DRdoi
10.1093/nar/14.9.3945subject
Has Abstractpub_date
1986-05-12 00:00:00pages
3945-56issue
9eissn
0305-1048issn
1362-4962journal_volume
14pub_type
杂志文章abstract::Isopentenyl adenosine derivatives are always located adjacent to the 3' end of the anticodon in transfer RNA and have been implicated in certain biological functions. In the enteric bacterium, E. coli, the derivative is ms2i6A whereas in some plant associated bacteria the derivative is the hydroxylated form, ms2io6A. ...
journal_title:Nucleic acids research
pub_type: 杂志文章
doi:10.1093/nar/10.18.5663
更新日期:1982-09-25 00:00:00
abstract::Signal transducer and activator of transcription 6 (STAT6) is a regulator of transcription for interleukin-4 (IL-4)-induced genes. The ability of STAT6 to activate transcription depends on functional interaction with other transcription factors and coactivators. We have characterized the mechanism of STAT6-mediated tr...
journal_title:Nucleic acids research
pub_type: 杂志文章
doi:10.1093/nar/gkl539
更新日期:2006-01-01 00:00:00
abstract::Although secondary structure predictions of an individual RNA sequence have been widely used in a number of sequence analyses of RNAs, accuracy is still limited. Recently, we proposed a method (called 'CentroidHomfold'), which includes information about homologous sequences into the prediction of the secondary structu...
journal_title:Nucleic acids research
pub_type: 杂志文章
doi:10.1093/nar/gkr290
更新日期:2011-07-01 00:00:00
abstract::A linear DNA plasmid, designated pLLE1, has been isolated from a mitochondrial fraction of a strain of Lentinus edodes. pLLE1(11.0 kbp) was sensitive to the 3'----5'-acting exonuclease III and resistant to the 5'----3'-acting lambda exonuclease. It showed no homology with mitochondrial and nuclear genomic DNAs of plas...
journal_title:Nucleic acids research
pub_type: 杂志文章
doi:10.1093/nar/18.6.1395
更新日期:1990-03-25 00:00:00
abstract::We characterized and purified a protein from rat liver which specifically binds to a DNA motif present in a liver-specific enhancer of the rat tyrosine aminotransferase (TAT) gene, when offered as single-stranded DNA. Binding is highly sequence-specific and coincides with a region known to be essential for function of...
journal_title:Nucleic acids research
pub_type: 杂志文章
doi:10.1093/nar/20.6.1243
更新日期:1992-03-25 00:00:00
abstract::Genome-wide mapping in the identification of novel candidate genes has always been the standard method in genetics and genomics to correlate a clinically interesting phenotypic trait with a genotype. However, the performance of a mapping experiment using classical microsatellite approaches can be very time consuming. ...
journal_title:Nucleic acids research
pub_type: 杂志文章
doi:10.1093/nar/gki430
更新日期:2005-07-01 00:00:00
abstract::The structures of the termini and their flanking regions of two human KpnI family members were investigated. The two differed in length, but the starting sequence at one terminal (defined as the 5' terminal) was found to be common to both members. The Alu family sequence was found in the 5' flanking regions. The KpnI ...
journal_title:Nucleic acids research
pub_type: 杂志文章
doi:10.1093/nar/11.19.6837
更新日期:1983-10-11 00:00:00
abstract::In this article, we characterize histone demethylase activity of the entire family of JmjC+N proteins of Drosophila melanogaster. Our results show that Lid (little imaginal discs), which is structurally homologous to JARID1, demethylates H3K4me3. However, contrary to what would be inferred from its demethylase activit...
journal_title:Nucleic acids research
pub_type: 杂志文章
doi:10.1093/nar/gkn098
更新日期:2008-05-01 00:00:00
abstract::The gene co-expression analysis toolbox (GeneCAT) introduces several novel microarray data analyzing tools. First, the multigene co-expression analysis, combined with co-expressed gene networks, provides a more powerful data mining technique than standard, single-gene co-expression analysis. Second, the high-throughpu...
journal_title:Nucleic acids research
pub_type: 杂志文章
doi:10.1093/nar/gkn292
更新日期:2008-07-01 00:00:00
abstract::We have developed efficient methods for creating artificial transposons and inserting these transposons into plasmid targets in vitro, primarily for the purpose of DNA mapping and sequencing. A novel plasmid has been engineered to convert virtually any DNA sequence, or combination of sequences, into an artificial tran...
journal_title:Nucleic acids research
pub_type: 杂志文章
doi:10.1093/nar/22.18.3765
更新日期:1994-09-11 00:00:00
abstract::50 to 55% of tobacco and barley nuclear DNA is accessible to micrococcal endonuclease digestion. The DNA fragments resulting from a mild endonuclease treatment are multiples of a basic unit of 194 +/- 6 base pairs in tobacco and 195 +/- 6 base pairs in barley. After extensive digestion, a DNA fragment of approximately...
journal_title:Nucleic acids research
pub_type: 杂志文章
doi:10.1093/nar/4.10.3617
更新日期:1977-10-01 00:00:00
abstract::Daunomycin is one of the most important agents used in anticancer chemotherapy. It interacts with DNA through intercalation of its planar chromophore between successive base pairs. The effect of intercalation on structure, dynamics and energetics is the topic of a wealth of scientific studies. In the present study, we...
journal_title:Nucleic acids research
pub_type: 杂志文章
doi:10.1093/nar/gkh788
更新日期:2004-09-01 00:00:00
abstract::Many, if not all, mRNAs in T.brucei start with the same sequence of 35 nucleotides, separately encoded in clustered so-called mini-exon repeats. From these mini-exon repeats a 141-nt precursor RNA with the 35-nt sequence at its 5' end is transcribed. Indirect evidence suggests that this RNA is linked in a second step ...
journal_title:Nucleic acids research
pub_type: 杂志文章
doi:10.1093/nar/12.24.9457
更新日期:1984-12-21 00:00:00
abstract::We investigate the mechanistic nature of the Snf2 family protein HARP, mutations of which are responsible for Schimke immuno-osseous dysplasia. Using a single-molecule magnetic tweezers assay, we construct RPA-stabilized DNA bubbles within torsionally constrained DNA to investigate the annealing action of HARP on a ph...
journal_title:Nucleic acids research
pub_type: 杂志文章
doi:10.1093/nar/gkx147
更新日期:2017-05-05 00:00:00
abstract::Upon activation of the ERK and p38 MAPK pathways, the MSK1/2-mediated nucleosomal response, including H3 phosphorylation at serine 28 or 10, is coupled with the induction of immediate-early (IE) gene transcription. The outcome of this response, varying with the stimuli and cellular contexts, ranges from neoplastic tra...
journal_title:Nucleic acids research
pub_type: 杂志文章
doi:10.1093/nar/gkq030
更新日期:2010-06-01 00:00:00
abstract::Treatment of cells with DNA damaging agents leads to induction of a variety of genes involved in different cellular processes. We have applied a lacZ-based gene trap strategy to search for new mammalian genes induced by genotoxic stress. A population of 32 x 10(3) neo r clones stably transfected with a gene trap vecto...
journal_title:Nucleic acids research
pub_type: 杂志文章
doi:10.1093/nar/25.23.4803
更新日期:1997-12-01 00:00:00
abstract::Mono- and polyclonal antibodies directed against different domains of the potato leafroll luteovirus (PLRV) P1 (ORF1) protein were applied to the analysis of P1 expression during PLRV replication in planta. Western analyses detected P1 and a protein of approximately 25 kDa (P1-C25) that accumulated to readily detectab...
journal_title:Nucleic acids research
pub_type: 杂志文章
doi:10.1093/nar/27.2.421
更新日期:1999-01-15 00:00:00
abstract::In prokaryotes and archaea transfer ribonucleic acid (tRNA) stability as well as cellular UV protection relies on the post-transcriptional modification of uracil at position 8 (U8) of tRNAs by the 4-thiouridine synthetase ThiI. Here, we report three crystal structures of ThiI from Thermotoga maritima in complex with a...
journal_title:Nucleic acids research
pub_type: 杂志文章
doi:10.1093/nar/gku249
更新日期:2014-06-01 00:00:00
abstract::Human apolipoprotein (apo) B mRNA is edited in a tissue specific reaction, to convert glutamine codon 2153 (CAA) to a stop translation codon. The RNA editing product templates and hybridises as uridine, but the chemical nature of this reaction and the physical identity of the product are unknown. After editing in vitr...
journal_title:Nucleic acids research
pub_type: 杂志文章
doi:10.1093/nar/19.6.1197
更新日期:1991-03-25 00:00:00
abstract::ZFP57 is necessary for maintaining repressive epigenetic modifications at Imprinting control regions (ICRs). In mouse embryonic stem cells (ESCs), ZFP57 binds ICRs (ICRBS) and many other loci (non-ICRBS). To address the role of ZFP57 on all its target sites, we performed high-throughput and multi-locus analyses of inb...
journal_title:Nucleic acids research
pub_type: 杂志文章
doi:10.1093/nar/gkw505
更新日期:2016-09-30 00:00:00
abstract::Through a computer search of DNA databases, we have identified the homologs of the mgU6-47 snoRNA gene from the yeast Schizosaccharomyces pombe, the fly Drosophila melanogaster and human. The three box C/D-containing snoRNA genes showed no significant similarity in their sequences except for an 11 nt long complementar...
journal_title:Nucleic acids research
pub_type: 杂志文章
doi:10.1093/nar/30.4.894
更新日期:2002-02-15 00:00:00
abstract::Aspects of the metabolism of RNA have been studied in enzymatically isolated protoplasts from cotyledon and first leaf mesophyll tissue of two cultivars of cucumber. The first leaf mesophyll protoplasts incorporated (3H)-uridine into ribosomal RNA at a constant rate for up to 25 hr in a simple salts medium and for up ...
journal_title:Nucleic acids research
pub_type: 杂志文章
doi:10.1093/nar/2.7.1111
更新日期:1975-07-01 00:00:00
abstract::We recently reported that the antitumor triazoloacridone, compound C-1305, is a topoisomerase II poison with unusual properties. In this study we characterize the DNA interactions of C-1305 in vitro, in comparison with other topoisomerase II inhibitors. Our results show that C-1305 binds to DNA by intercalation and po...
journal_title:Nucleic acids research
pub_type: 杂志文章
doi:10.1093/nar/gki904
更新日期:2005-10-27 00:00:00
abstract::The role of the cyclic-AMP (cAMP) responsive element (CRE) in eukaryotic gene transcription was investigated in several cell lines transfected by constructs containing the chloramphenicol acetyltransferase (CAT) gene linked to the three different promoters, simian virus (SV) 40, human c-Ha-ras-1, or chicken beta-actin...
journal_title:Nucleic acids research
pub_type: 杂志文章
doi:10.1093/nar/17.4.1521
更新日期:1989-02-25 00:00:00
abstract::Reverse gyrase is a peculiar DNA topoisomerase, specific of hyperthermophilic Archaea and Bacteria, which has the unique ability of introducing positive supercoiling into DNA molecules. Although the function of the enzyme has not been established directly, it has been suggested to be involved in DNA protection and rep...
journal_title:Nucleic acids research
pub_type: 杂志文章
doi:10.1093/nar/gkl115
更新日期:2006-04-14 00:00:00
abstract::In Saccharomyces cerevisiae, the stability of highly repetitive rDNA array is maintained through transcriptional silencing. Recently, a β-1,3-glucanosyltransferase Gas1 has been shown to play a significant role in the regulation of transcriptional silencing in S. cerevisiae. Here, we show that the gas1Δ mutation incre...
journal_title:Nucleic acids research
pub_type: 杂志文章
doi:10.1093/nar/gku570
更新日期:2014-07-01 00:00:00
abstract::We combine comparative genomic measures and the distance separating adjacent genes to predict operons in 124 completely sequenced prokaryotic genomes. Our method automatically tailors itself to each genome using sequence information alone, and thus can be applied to any prokaryote. For Escherichia coli K12 and Bacillu...
journal_title:Nucleic acids research
pub_type: 杂志文章
doi:10.1093/nar/gki232
更新日期:2005-02-08 00:00:00
abstract::Understanding the evolutionary and genomic mechanisms responsible for turning the soil-derived saprophytic mycobacteria into lethal intracellular pathogens is a critical step towards the development of strategies for the control of mycobacterial diseases. In this context, Mycobacterium indicus pranii (MIP) is of speci...
journal_title:Nucleic acids research
pub_type: 杂志文章
doi:10.1093/nar/gks793
更新日期:2012-11-01 00:00:00
abstract::Gene trap vectors developed for genome-wide mutagenesis can be used to study factors governing the expression of exons inserted throughout the genome. For example, entrapment vectors consisting of a partial 3'-terminal exon [i.e. a neomycin resistance gene (Neo), a poly(A) site, but no 3' splice site] were typically e...
journal_title:Nucleic acids research
pub_type: 杂志文章
doi:10.1093/nar/gkh604
更新日期:2004-05-20 00:00:00
abstract::The RNA Editing Database (REDIdb) is an interactive, web-based database created and designed with the aim to allocate RNA editing events such as substitutions, insertions and deletions occurring in a wide range of organisms. The database contains both fully and partially sequenced DNA molecules for which editing infor...
journal_title:Nucleic acids research
pub_type: 杂志文章
doi:10.1093/nar/gkl793
更新日期:2007-01-01 00:00:00